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An Improved Deviation Measure for Two-Path Echo Cancellation
Responsible organisation
2010 (English)Conference paper (Refereed) Published
Abstract [en]

Parallel adaptive filters have been proposed for echo cancellation to solve the dead-lock problem, occurring when the echo is detected as near-end speech after a severe echo-path change; causing the updating of the adaptive filter to halt. To control the parallel filters and monitor their performance, estimates of the filter deviation (i.e. the squared norm of the filter mismatch vector) are typically used. This paper presents a modification of a filter mismatch estimator. The proposed modification requires slightly more computational resources than the original measure, but provides a significantn improvement in terms of robustness during double-talk. This is shown both analytically and through simulations.

Place, publisher, year, edition, pages
Dallas: IEEE , 2010.
Keyword [en]
Echo cancellation, adaptive filters, two-path, transfer logic
National Category
Telecommunications Signal Processing
URN: urn:nbn:se:bth-7836ISI: 000287096000074Local ID: 978-1-4244-4296-6OAI: diva2:835503
35th International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
Available from: 2012-09-18 Created: 2010-03-23 Last updated: 2015-06-30Bibliographically approved

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Claesson, Ingvar
TelecommunicationsSignal Processing

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ReferencesLink to record
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